如何使用Spring呈现页面？

Question

我一直在试图遵循this repo的结构，并从我所看到的我已经匹配它并修改了所需的属性。

当我运行的项目，我得到的错误

java.lang.RuntimeException: java.lang.IllegalStateException: Cannot initialize context because there is already a root application context present - check whether you have multiple ContextLoader* definitions in your web.xml!

即使我只有一个串在我的整个项目配套ContextLoader*，更别说我web.xml。

我有很多文件的错误可能存在，所以我不会立即包括它们所有立即简洁，所以如果你认为一个可能是相关的，请评论，我会添加它，但总的来说，他们类似于早前联回购..我的项目结构如下所示：

我web.xml看起来是这样的：

<web-app xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" 
    version="3.0"> 

<!-- The definition of the Root Spring Container shared by all Servlets and Filters --> 
<context-param> 
    <param-name>contextConfigLocation</param-name> 
    <param-value>/WEB-INF/spring/root-context.xml</param-value> 
</context-param> 

<!-- Creates the Spring Container shared by all Servlets and Filters --> 
<listener> 
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 
</listener> 

<!-- Processes application requests --> 
<servlet> 
    <servlet-name>appServlet</servlet-name> 
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
    <init-param> 
     <param-name>contextConfigLocation</param-name> 
     <param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value> 
    </init-param> 
    <load-on-startup>1</load-on-startup> 
    <async-supported>true</async-supported> 
</servlet> 

<servlet-mapping> 
    <servlet-name>appServlet</servlet-name> 
    <url-pattern>/</url-pattern> 
</servlet-mapping> 

<!-- Disables Servlet Container welcome file handling. Needed for compatibility with Servlet 3.0 and Tomcat 7.0 --> 
<welcome-file-list> 
    <welcome-file></welcome-file> 
</welcome-file-list> 

我怎样才能得到它加载index.html或home.jsp页面？

编辑

ApplicationConfig.java

package brass.ducks; 

import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.EnableAutoConfiguration; 
import org.springframework.boot.builder.SpringApplicationBuilder; 
import org.springframework.boot.web.support.SpringBootServletInitializer; 
import org.springframework.context.annotation.ComponentScan; 
import org.springframework.context.annotation.Configuration; 
import org.springframework.web.bind.annotation.PathVariable; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RestController; 


@Configuration 
@ComponentScan 
@EnableAutoConfiguration 
public class ApplicationConfig extends SpringBootServletInitializer{ 

    public static void main(String[] args) { 
     SpringApplication.run(ApplicationConfig.class, args); 
    } 

    @Override 
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) { 
     return application.sources(applicationClass); 
    } 

    private static Class<ApplicationConfig> applicationClass = ApplicationConfig.class; 



} 

Answer 1

你混合弹簧引导和历久弥新的经典xml配置的方式，无法正常工作。

要获取Boot，其配置和运行方式，请删除web.xml。

但最深的是什么兄弟，你的构造延伸SpringBootServletInitializer（SpringBootServletInitializer是traditional deployment（顺便说一句的类deprecated in Boot 1.4））